Robert Klank, M.A.

@article{Schreiter2025,

title = {Mixed Reality Assistance for Needle Insertion under Ultrasound Imaging: A Pilot Study},

author = {J Schreiter and P Pandi and R Klank and O S Großer and C Hansen and F Heinrich},

url = {https://www.researchgate.net/publication/399914083_Mixed_Reality_Assistance_for_Needle_Insertion_under_Ultrasound_Imaging_A_Pilot_Study},

doi = {10.1515/cdbme-2025-0327},

issn = {2364-5504},

year  = {2025},

date = {2025-12-01},

urldate = {2025-12-01},

journal = {Current Directions in Biomedical Engineering},

volume = {11},

number = {2},

pages = {104–107},

publisher = {Walter de Gruyter GmbH},

abstract = {Ultrasound (US)-guided needle interventions require precise coordination between imaging and instrument handling, which can be ergonomically challenging with conventional displays. This work presents a mixed reality (MR) prototype that integrates live US and pre-interventional CT data into a video passthrough head-mounted display (HMD), enabling a spatially registered in-situ view and interactive virtual displays. Unlike prior work relying on optical see-through HMDs, our system combines immersive guidance and interactive tools to support image-guided needle insertion. A preliminary user study with six radiologists assessed usability and clinical potential. Results indicate slightly above-average usability, with participants valuing field-of-view integration. User feedback highlighted the need for features such as interactive planning and extended visualizations, e.g. patientspecific anatomy.With these refinements, the prototype shows strong potential to improve ergonomics and spatial awareness during US-guided procedures.

},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{JannyKlank2024,

title = {Human Factors Validation of Collaborative Medical Workflows Through Multi-User Workflow Simulation: A Case Study in Interventional Radiology},

author = {B Janny and R Klank and J Glandorf and F Wacker and B Hensen and J Moritz },

url = {https://openaccess.cms-conferences.org/publications/book/978-1-964867-06-9/article/978-1-964867-06-9_16},

doi = {10.54941/ahfe1004847},

year  = {2024},

date = {2024-01-01},

urldate = {2024-01-01},

booktitle = {Applied Human Factors and Ergonomics International (AHFE)},

journal = {Applied Human Factors and Ergonomics International (AHFE)},

abstract = {This paper challenges the traditional focus on individual 1on1 sessions during workflow simulations and usability testing, which often fail to capture the collaborative nature of medical workflows. To overcome this, a human factors and workflow simulation lab was developed within the research campus STIMULATE. The paper describes the conception, development, and operational capabilities of the lab particularly focusing on collaborative human factors assessment. A novel methodology, based on hierarchical task analysis, is introduced. It breaks down complex workflows into subtasks and assigns them to specific user groups, such as Radiologists and Radiologic Technologists, capturing the intricacies of user interactions in specialized medical environments. The lab’s first validation study is presented using the example of the simulation of an image-guided interventional liver biopsy. The study demonstrates the lab's ability to accurately replicate a high percentage of tasks performed by medical professionals in complex procedures, thereby confirming its effectiveness in modelling collaborative medical workflows. It emphasizes the importance of detailed task-level workflow segmentation for analysing human-machine and human-human interactions and introduces specific metrics for measuring usability dimensions like effectiveness, efficiency, and satisfaction.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}